1. A chemical substance that transforms incident electromagnetic or radiation energy into light, as in scintillation radioactivity determinations or radiographic intensifying screens or image amplifiers. 2. Any substance capable of exhibiting phosphorescence. [G. phos, light, + phoros, bearing]
- photostimulable p. the chemical coating the p. plate in a computed radiography system; the latent image is recovered by laser scanning.
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phos·phor 'fäs-fər, -.fȯ(ə)r also phos·phore -.fō(ə)r, -.fȯ(ə)r, -fər n a phosphorescent substance specif a substance that emits light when excited by radiation
Medical dictionary. 2011.